Which of the following equations can be used to calculate poh?

There is not any options, but to calculate the pOH, you would use the equation

pOH = -log [OH-]
pH = -log [H+]

to check and see if you’re correct, use the values of both pOH and pH (pH + pOH) and see if it equals 14. if it does, then you’re right. if it doesn’t, you have probably made a minor mistake. have a great day!

Aphysical change is one that you can put in and remove like a ham sandwich. the stuff you put in there can be changem its not permanet. a chemical change is on that can't be change thats permanet. like when you make a cake and bake it. you can't get those ingredients back.